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10 A student investigated the width of leaves on nettle plants growing in two areas next to a woodland - Edexcel - GCSE Biology - Question 10 - 2022 - Paper 1
Question 10
10 A student investigated the width of leaves on nettle plants growing in two areas next to a woodland. Figure 19a shows a nettle plant and Figure 19b shows a map o... show full transcript
Worked Solution & Example Answer:10 A student investigated the width of leaves on nettle plants growing in two areas next to a woodland - Edexcel - GCSE Biology - Question 10 - 2022 - Paper 1
Step 1
Give one reason why the student always measured a leaf from the fourth pair of leaves.
Answer
The reason the student always measured a leaf from the fourth pair of leaves is to ensure consistency in measurement across all samples. By selecting leaves from the same position on the plant, the student could reduce variability due to factors such as age or position of the leaves, allowing for a more accurate comparison of leaf width between the two areas. This method helps to control for any extraneous variables that might affect the results and provides a standardized approach to data collection.